Fluid compressor



A. S. HASLAM.

D COMPRESSOR. APPLI n FILED FEB. 15. 1921.

1,408,593. Patented Mar. 7,1922.

SHEET 1 2 SHEETS A. S. HASLAM FLUID COMPRESSOR. APPLICATION FILED FEB. I5, 1921.

' 1,408,593. PatentedMar. 7,1922,

2 SHEETSSHEET 2- &\ F 0 UNITED STATES PATENT OFFICE.

ALFRED SEALE HASLAM, F DERBY, ENGLAND.

FLUID COMPRESSOR.

Specification of Letters Patent.

Patented Mar. '7, 1922.

Application filed February 15, 1921. Serial No. 445,131.

T 0 all whom it may concern:

This invention relates to apparatus for compressing gases where more than two presspindle or prefera sures are employed, and more particularlyto' refrigerating apparatus using as a refrlgerating agent carbon dioxide, ammonia or other fluid and working on what is known as the multiple eflect system where the compressorcylinder is supplied with gas from two or more sources at different pressures, the gas at the higher pressure being.

admitted into the cylinder so as to bring the pressure up to the highest value before the compression stroke. p In such apparatus, fluid passes from a condenser through an expansion valve or cock into a receiver which is used to separate the liquid from the gas which is formed at the expansion valve above mentioned. The gas so formed passes away from the top of the receiver to the compressor and the liquid falls to the bottom and passes a second expansion valve or cook to the evaporator.

According to this invention the two expansion valves or cocks are so arranged that they may be simultaneously adjusted at one operation.

In one method of carrying out the invention, two parallel valves are connected either directly or through levers to a single regulating screw. The pivot of one of the levers maybe adjustable so that the ratio of the opening of the two valves maybe varied.

The valve seats may also be made adjustable so that the valve openin s can be altered independently of the regulatlng screw.

In another method the two valwes are formed on one-spindle capable of endways adjustment either by a screw thread on the b y by means of-a differential thread which gives a more sensitive ad'ustment.

he valve spindle and the seats are preferably made of a self hardening steel so as to resist the wear due to the high speed of the gases passing through.

A suitable division plate is preferably provided between the valve seats in order to direct the gas given off at the first valve towards the top of the receiver, and to ensure a supply of liquid to the outlet valve.

The annexed drawings illustrate two methods of carrying out the invention.

Figure l is a diagrammatic view ofa multiple efi'ect apparatus.

Figure 2 is a sectionof an apparatus in which two parallel valves are employed-and Figure 3 is a section in which two valves are mounted on one spindle.

In Figure 1, A is a compressor connected to a condenser C and R is a multiple efl'e'ct receiver connected to the condenser C and to an evaporatorE, the flow being regulated by two simultaneously adjusted valves V. The receiver R and evaporator E are also connected to the compressor A as shown. I

The present-invention relates to the construction of the valves V examples of which are shown in Figures 2 and 3.

In Figure 2 a valve a is held on its seat 6 by a lever c pivoted at cl and another valve (2 parallel to the valve a is held on its seat 7 by a lever g pivoted at h and to which the valve e is connected by a pivot j. The movement of the valves a and -e is adjusted by a regulating screw 70 which engages with the lever 9 whereby both valves can be adjusted at oneoperation. The pivot d of the lever c is carried by a screw rod Z by which the ivotd can be moved so that the ratio of t e" opening of the two valves (1 and e may be varied. Fluid from the condenser C enters through a passage m through the valve a to the receiver R and the gas formed passes away through an outlet 0 to the compressor A and the liquid passes the valve .e to the outlet p leading to the evaporator E. The valve seats I) and f are carried by screw rods q and 1' respectively so that the valve openings can be altered independently.

Referring to Figure 3 the valves a and I) having seats a and 03 respectively are formed on a spindle e-ca able of endways adjust- -ment by means 0 a screw thread 7 on the spindle e engaging with a screw thread 9 on the rod it having another screw thread 7' enga ing with a screw threadlc on its socket, the t reads f and 9 being of less pitch than the threads y and k. The spindle e is prevented from turning by the pin Z. Liquid from the condenser C enters an inlet m,

flows past the valve a into'thc receiver R.

and the gas formed passes out through an expansion outlet n to the compressor A whilst the liquid passes the valve F9 to an outlet 0 leading'to the evaporator-E. A division plate p is provided between the seats 0 and d of the valves in order to direct the gas given off at the valve a towards the top of the receiver R and to ensure a supply of liquid to the valve 6.

What I claim is 1. In apparatus for compressing gases of the type specified, a condenser, a multiple efi'ect receiver, a valve controlled connection between the condenser and receiver, an evaporator, a valve controlled connection between the receiver and the evaporator and means for simultaneously adjusting the valves. a

'2. In apparatus for compressing gases of the type specified, a condenser, a multiple effect receiver, a valve controlled connection between the condenser and receiver, an

evaporator, a valve controlled connection between the receiver and the evaporator, a

spindle carrying both valves, and means for moving the spindle endwise.

3. In apparatus for compressing gases of the type specified, a condenser, a multiple efi'ect receiver, a valve cont-rolled connection between the condenser and receiver, an evaporator, a valve controlled connection between the receiver and the evaporator, a spindle carrying both valves, means for moving the spindle endwise and a division plate in the receiver between the valves.

4. In apparatus for compressing gases of the type specified, a condenser, a multiple efiect receiver, a valve controlled connection between the condenser and receiver, an evaporator, a valve controlled connection between the receiver and the evaporator, a spindle carrying both valves, a screw thread on the spindle engaging with a screw thread on a rod,-and another screw thread on the rod engaging with a screw thread on its socket.

In testimony that I claim the foregoing as my invention, I sign my name this fifteenth day of December, 1920.

ALFRED SEALE HAQSLAM. 

